A nurse has gone missing after taking part in a clinical trial for malaria, police said.
Matthew Lloyd, 35, who normally works at Southampton General Hospital, failed to attend treatment in Oxford to do with the trial.
He had phoned in ill to work in the days immediately prior to his appointment on Thursday and now has not been seen for a number of days.
Matthew, from Shirley in Southampton, requires urgent medication, a Hampshire police spokesman confirmed.
"Police are appealing for anyone who has seen him or thinks they know where he is to contact them or for Matthew himself to give them a call," the spokesman said.
He is described as white with short brown hair, of medium build with a swarthy complexion.
As well as having connections with Oxford for his clinical trials Mathew is known to have connections with Cornwall and the Avon and Somerset area.Reuse content